Edge setting and inking machine



May 27, 1941. G. w. LIBERTY ETAL EDGE SETTING AND INKING MACHINE FiledNov. 9, 1939 5 Sheets-Sheet 1 1941- e. w. LlB ERTY ETAL 2,243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1939 5 Sheets-Sheet 2 IL4: A Imviwijasz y 27, 19 1. G. w. LIBERTY ET AL 2 243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1959 5 Sheets-Sheet 3 y1941- G. w. LIBERTY ETAL 52,243,163

EDGE SETTING AND INKING MAGI'IINE Filed NOV. 9, 1939 '5 Sheets-Sheet 4 y1941- G. w. LIBERTY E1- 2,243,163

EDGE SETTING AND INKING MACHINE Filed Nov. 9, 1 939 5 Sheets-Sheet 5 IN\/EN+EI RS:

Patented May 27, 1941 EDGE SETTING AND INKING MACHINE George W. Libertyand Gustaf Bratt, Lynn, Mass, assignors to National Development Company,Lynn, Mass, a corporation of Massachusetts Application November 9, 1939,Serial No. 303,630

4 Claims.

This invention relates to machines for finishing the edge of shoetreads, such as the edge of a toplift of a wood heel.

In finishing the edge of shoe treads, the edge is inked and waxed andthen set to form a finishing bead along the tread portion. Machines havebeen provided for setting the edge of the tread portion of a shoe, butprior to the present invention, the inking operation has been performedby hand. Thus, the edge of each tread portion has been inked and waxedby a hand operation and thereafter has been set by machine.

It is an object of the present invention to provide a suitable machinefor performing the inking and waxing operation upon the edge of thetread portion of a shoe.

The invention will be more clearly understood from the followingdescription in conjunction with the accompanying drawings, in which,

Fig. 1 is a side elevational view of a machine embodying the invention;

Fig. 2 is a plan view of the same looking in the direction of the arrowin Fig. 1;

Fig. 3 is a view similar to Fig. 1, showing the waxing and inkingmechanism detached;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2;

Fig. 5 is a plan view looking in the direction of the arrow in Fig. 3;

Fig. 6 is aperspective view of a wood heel showing the edge ofthetoplift after ithas been waxed or inked by the machine ofthe invention;

Fig. 7 is a perspective view of a wood heel showing the edge of thetoplift set by the machine of the invention;

Fig. 8 is a side elevational view of a portion ofthe machine; and

Fig. 9 is a view similar to Fig. 3 showing the parts in difierentpositions.

The machine illustrated in the accompanying drawings embodies theessential elements-of that described in the patent to Merton W. Howard,No; 1,829,800, dated November 3, 1931, which is arranged to roll in ajoint a between the heel A and the toplift B (Fig. '1), and to form abead 0 along the curved part of the toplift at its outer edge. Inaddition, the machine embodies other instrumentalities which function intimed relation to the edge setting mechanism for first inking the edgeof the tread portion.

As illustrated in the accompanying drawings, particularly Figs. 1, 2, 3and 4, the machine of the invention comprises a frame which is designedto provide the necessarybear-in'gs, sup

ports and guides for the various parts. A main driving shaft 21 isjournalled in bearings in the frame 20 and is driven from a suitablesource of power (not shown). Fast upon the shaft 21 is a pinion 30 whichmeshes'with a gear 3| on a cam shaft 32 journalled in suitable bearingsin the frame 2!]. J ournalled respectively in bearings 33 and 34 in theframe 20 are the aligned sections 35 and 36 of a two-partjack shaft, theends of said sections being spaced from one another and being connectedby a yoke 31. The yoke 31 is formed at one end with a hub 38 keyed or.otherwise fixed to the end of the shaft section 35, and its opposite endwith a split hub 39 abutting the bearing 34 and secured to the end ofthe shaft section 36 by a clamp bolt 4|! and spline- (not shown),thereby permitting longitudinal adjustment of the shaft section 36 inthe hub 39.

Secured to one end of the main driving shaft 21 is a crank arm 42 havingways to receive a slide 43 adjustable therein by means of an adjustingscrew 44. Pivoted to the slide 43 is one end of a pitman 45 the oppositeend of which is pivoted to a block 46 slidable in a slot 41 in a gearsegment 48 pivoted at.49 to the frame. 20 and:

meshing with a pinion 50 secured to the outerv end of the section 35 ofthe jack shaft. The. block 46 is normally held in the upper end of" theslot 41 to afford the driving connection be tween the pitman 45 andsegment 48, by means of a dog 5| pivoted at 52 to said segment andnormally held in operative position by a spring 53. The dog 5! is formedwith a foot 4 which depends into the path of movement of a pin 55projecting from the face of the gear 3| which thereby constitutes acontroller for said dog.

It will be seen that with the block 46 locked in its operative positionin the slot 41, the jack shaft and work holder will be oscillated fromthe main driving shaft 21 through the crank 42, pitman 45,

segment 48, and pinion 50, the amplitude of oscillation beingdetermined, in accordance with the arcuate or circumferential length ofthe edge of the particular style of toplifts to be operated upon, byadjustment of the slide 43. After one revolution of the gear 3| whichmay be designed to correspond to any desired number of oscillations ofthe jack,.the foot 4 is engaged by thev pin 55, causing the dog 5| to bedisengaged from the block 46 leaving the latter free to reciprocate inthe slot 41. The jack, therefore, will remain idle during one completerotation of the shaft 21-, this being the-unloading and loadingpcriodiinthe cycle of operations of the machine which period one completed pieceof work is removed from the machine and a new piece inserted. By thetime shaft 21 has completed one revolution, the pin 55 has moved out ofengagement with the foot 4, permitting the spring 53 to restore the dogto its normal position, thereby again locking the slide 46 to thesegment 48, and the oscillation of the jack is resumed or continued.

The means for positioning and clamping the work in the jack comprises atoplift rest or plate 56 for engaging the outer face of the toplift B, abreast gauge 1 for engaging the breast of the heel A, a heel seatsupport 58-carrying a detachable positioning plate 59 for engaging theheel seat portion of the heel A.

The breast gauge 1 has a shank portion slidably received in the yoke 31and suitably secured for adjustment therein, the means for adjusting notbeing shown. The breast gauge 1 positions the heel horizontally and itsadjustment adapts the machine to heels of varying shapes in order thatthe axis of the curvature of the: toplift edge may substantiallycoincide with the axis of oscillation of the jack, that is to say, thecommon axis of the shaft sections 35 and 36. The vertical positioning ofthe heel in order to bring said axis substantially into coincidence inthe vertical plane is effected by the sense of touch of the operatorwith the assistance of the heel seat centering plate 59 which isdetachably secured to the heel seat support 58. The machine is providedwith mechanism, not shown, for drawing the opposed clamping devicesapart to permit the insertion of the heel.

A lever 15 (Figs. 1, 2 and is pivotally mounted at 16 to the frame 20.The lever is provided with a pair of spaced lateral projections 11between which a rod 18 extends. An arm 19 is pivotally mounted upon therod 18 and carries a holder 80 in which the edge-setting iron 8 ismounted. The iron 8 may be heated electrically by means in dicated at14. An adjusting screw 8| is threaded in the arm 19 and is adapted toengage the surface of the lever 15. One end of a coil spring 65 issecured to a hook 66 fixed in the arm 19 and the other end of the spring55 is secured to one arm of a bell crank 90 which is pivotally mountedat SI to the frame 20. The other end of the bell crank 90 carries afollower roll 82 engaging a cam 93 fixed upon the cam shaft 32. Thespring 65 serves to maintain the screw 8| (Fig. 2) in engagement withthe arm 15 and is adapted to cause the iron 8 to exert a heavy pressureupon the work. A short lever 83 (Fig. 8) is pivotally mountedintermediate its ends upon a stud 84 fixed in the lever 15. A stud 85projecting laterally from near one end of the lever 83 carries afollower roll 86 engaging a cam 81 fixed upon the cam shaft 32. A hook88 is fixed to the lever 83 near its other end and is adapted to receiveone end of a coil spring 89, the other end of which is secured to theframe 20. The spring 89 maintains the opposite end of the lever 83 inengagement with the end of an adjusting screw 94 threaded in a lugprojecting from the lever 15 and also causes the iron 8 to exert a lightpressure upon the work.

A reservoir I00 (Figs. 3 and 9) adapted to receive colored wax or ink ismounted upon a bracket IOI fixed to the frame 210. If a colored wax isemployed which is solid at normal temperatures, it may be liquefied byelectrically heating means I0. An ink supply roll II is fixed upon ashaft I02 mounted for rotation in suitable bearings in the wall of thereservoir I00. Heating means I3 is provided for electrically heating theroll II. A pulley I03 is fixed upon the shaft I02 and is connected by abelt I04 with a pulley fixed upon the cam shaft 32. The roll II ispositioned in a plane spaced from the plane in which the tool 8 is movedtoward and away from the work.

A shaft II 6 is mounted for rotation in suitable bearings in the frame20. An arm I I0 is fixed to the shaft H6 near one end thereof andcarries a roll I I I adapted to engage a cam I I 2 fixed upon the shaft32. The roll III is maintained in engagement with the cam H2 by a springH1, one end of which engages a hook fixed in the arm I I0 and the otherend of which is secured to the frame 20. A sleeve I I3 is slidably keyedupon the shaft H6 near its other end and is provided with an annulargroove H4. An arm H9 is pivotally mounted upon the frame 20 and isprovided with a fork H8 which straddles the sleeve H3. Wear resistingshoes H5 are pivotally mounted on the opposite arms of the fork H8 andengage the groove H4. A stud I2I is fixed in a lug projecting laterallyfrom the arm H9 and carries a roll I22 positioned in the groove on theperiphery of a cam I23 fixed upon the shaft 32.

The sleeve H3 is provided near one end with a radial projection I25, oneface of which is provided with a recess I26. One end of an arm I21projects into the recess I26 and is pivotally mounted upon a stud I28.Leaf springs I30 and I3I are fixed upon opposite edges of the arm I21and project into the recess I26 between the ends of adjusting screws I32and I33, which are threaded in the projection I25. An ink-transfer rollI4 is pivotally mounted upon the arm I21 near its other end and isadapted to be moved by the mechanism described between a positionengaging the roll II and a position engaging the edge of the toplift B.Means generally indicated at I5 is provided for heating the roll I4.

During the unloading and loading period in the cycle of operations ofthe machine, as previously described, the oscillation of the jack isstopped so that one completed piece of work may be removed and a newpiece inserted. At this time the iron 8 is retracted from the work tothe position shown in Fig. 1 and the inktransfer roll I4 is in thedotted line position shown in Fig. 3 with its periphery engaging theperiphery of the ink supply roll II. Near the end of the loading period,the cam I23 (Fig. 5) causes the arm H9 to swing and slide the sleeve H3along the shaft H6. At the same time, the cam H2 (Fig. 3) swings the armH0 to rotate the sleeve II 3 and swing the arm I21. As a result of thecombined action of the cam I23 and the cam H2, the roll I4 is moved in adiagonal path from its dotted line position to its full line positionshown in Figs. 3 and 5. The jack then starts its oscillation and, as itmoves from one end of its amplitude of movement to its other end, ink isapplied by the roll I4 to the edge of the toplift B. As the jackcompletes its other half of one oscillation, the cams I23 and H2cooperate to move the roll I4 from its full line position shown in Fig.3 to its dotted line position. At the same time, the cam 81 permits thespring 65 to swing the arm 15 so as to move the iron 8 from thepositionshown in Fig. 1 to a position engaging the edge of the top lift B. Thejack then completes its cycle of oscillations and the iron 8 sets theedge of the toplift B. The oscillation of the jack then stops to permitunloading of the completed piece of work and the insertion of a newpiece. The iron 8 then is moved from its position engaging the edge ofthe toplift to its inoperative position as shown in Fig. 1.

The ink used in the preferred practice of the invention is a colored waxcompound which is solid at normal temperature. It is liquefied by heatand applied while in its heated liquid state and dries and hardensalmost instantly after application to the edge of the tread. Throughoutthis specification and appended claims the term ink is intended to meaneither a wax or color or both.

I claim:

1. In a machine for finishing the edge of a portion of a shoe tread,such as the edge of a toplift attached to a heel, means for holding saidtread, an edge setting iron, means for applying ink to said edge, meansfor moving said applying means from an operative position engaging saidtread to an inoperative positioni while moving said iron from aninoperative position to an operative position engaging said tread, andmeans operative when said iron and said applying means are in theiroperative positions for causing relative movement between the same andsaid holding means whereby to ink and set the edge portion of saidtread.

2. In a machine for finishing the edge of a portion of a shoe tread,such as the edge of a toplift attached to a heel, means for holding saidtread, an edge setting iron, means for applying ink to said edge, meansfor moving said applying means from an operative position engaging saidtread to an inoperative position while moving said iron from aninoperative position to an operative position engaging said tread,

and means for oscillating said holding means.

3. In a machine for finishing the edge of a portion of a shoe tread,such as the edge of a toplift attached to a heel, means for holding saidtread, an edge setting iron, an ink reservoir, an ink supply rolldepending into said reservoir, means for rotating said roll, a transferr011, means for moving said transfer roll into and out of positionsengaging said ink supply roll and said tread, means for moving said ironbetween an operative position engaging said tread and an inoperativeposition, and means for oscillating said holding means.

4. In a machine for finishing the edge of a portion of a shoe tread,such as the edge of a toplift attached to a heel, means for holding saidtread in a fixed location, means for applying ink to said edge, meansfor moving said applying means from a position in engagement with saidtread in said fixed location to a position out of engagement with saidtread, an edge setting iron, means for moving said iron from a positionin engagement with said tread in said fixed location to a position outof engagement with said tread, means for relatively moving,

